Nut-lock.



- APPLICA JAN. 25. 1911. I 1,272,584. Patented July 16, 1918.

UNITED sTArEs PATENT car es.

- FREDERICK C. WARNE, OF MANSFIELD, OHIO.

To all whom it may concern.

Be it known that I, FREDERICK C. Wanna, va-citizen of the United States of America,

[residing at Mansfield, in the county. of Richland and State of Ohio, have invented cer- NUT-LOOK.

win new and useful Improvements'in Nut- Locks, of which the following is a specificati'on.

This invention relatesto an improvement in nut locks of that type wherein the locking.

member is formed witha projection, adapted to be forced down into a groove or channel in the bolt, to lock the parts against relative rotatiom- In nut locks of this type it is'important that the locking memberbe so constructed and 'arranged as toafiord'the maximum strength when locked, without interfering with the capability of the structure .for restoring the locking element to normal positionfor free release of the arts.-

Furthermore, particular y in automobile construction, where thev applied nuts are sometimes diflicult to reach, it is of importance that the nut and locking means be so constructed as to avoid any interference with the use of the usual wrench, ordinarily of the socket type, in applying and remoting the nut.

The main object of the therefore, is a provision o a locking means separate from the nut, and which has a threaded connection with the bolt, and embodies a series of more or less flexible rojections 0r fingers, any one of which, w en in register with a groove or channel in the bolt, may be turned down into such channel to secure the applied parts against independent rotative movement on the bolt.

The fingers are of such length that when seated in the channel they will be disposed at an inclination to the longitudinal plane of the bolt other than a right angle, whereby to permit the application of a convenient implement into the groove and beneath the bent finger, to return said finger to normal position beyond the threads of the bolt, to

present invention,

Specification of Letters ratent. I I Patented J uly 16,1918. Application filed January 25, 1917. Serial K0. 144,518.

2 is a vertical sectional view illustrating the improvement and showing the nut lock member as separate from the bolt.

- Fig; 3 is a front elevation of the form shown in Fig. 2.

Pg. 4: is a perspective view of the locking member as an independent element.

. The locking member is separate from the nut 1, and is formed to provide an annular section 2, having an external diameter approximately equal to the minimum transverse external dimension of the nut, to avoid projection beyond the side surface ofthe nut. Thebore of the projection 2 is coextensive with the bore of the nut and the surface thus provided is threaded at 3 for cooperation with-thwthreads 4 of the bolt 5. Projecting downwardly from the free forward edge surface ofthe portion 2 are a series" of fingers '6.- These fingers may be in any number, though it is preferred that they be in-suflicient number to permit the cooperation of *the particular one with a chanyond the-threaded grooves in said bore, so i that when the nut lock is applied the inner surfaces of the fingers will lie wholly beyond and entirely free from the threads of the bolt. 7 a

The improved nut lock is constructed with a view .to providing maximum strength and at the same time permitting the continued reuse of the locking element. It is to be noted that the locking element has threaded connection with the bolt and that the fingers of'the locking element are of such length that when turned down into the groove or channel in bolt such fingers will lie at a forward downward inclination with respect to the bolt, whereby they may be readily restored to normal position v an inserted tool, when desired to release the locking cooperation. Of course it is preferred that in sectional contour and size, the fingers cor= respond more or less accurately With the similar dimension and shape, of the channel and both have their side walls preferably on lines corresponding to radial lines of the bolt, so that as the-finger is driven in to the channel there will result a comparative Wedgi'ng action, as shown more particularly "of least resistance of the finger Will be at the point of the projection of the finger from the part 2, therefore the finger Will be clearly 'yvithdrawn from engagement with the channel or groove without destroying,

am ter.

multilatinlg or in any Way injuring the threads of the bolt, locking member or nut.

W'hat is claimed as new is,

A nut having a threaded bore, a bolt, a separate cylindrical member of less external diameter than the size of the nut and engaging one face of the nut the cylindrical member having a threaded bore alining With and forming a continuation of the bore of the nut and a series of circularly arranged fingers projecting from the free edge of such cylindrical member and having their outer and inner surfaces respectively coincident With the outer surface of the cylindrical member and with the inner surface of said member and of the nut immediately beyond the threads.

In testimony whereof I afiix my signature FREDERICK CLWARNEQ 

